Draft-regulator for locomotive-engines



(N b Model.) 2 Shats-Shet 1.

E. E. WINKLBY. DRAFT REGULATOR FOR- LOGOMOTIVE ENGINES.. No'. 470,733.Patented Mar. 15, 1892.

Fig. 1.

No Model.) 2 sheets-sheet 2.

- E. E, WINKLEY. DRAFT REGULATOR FOR LOGOMOTIVE ENGINES.

No. 470,733; 4 Patented Mar. 15, 1892.

W|TNEE|EEE-- l NVENTEIFK..

UNITED STATES PATENT OFFICE.

ERASTUS E. WVINKLEY, OF LYNN, MASSACHUSETTS.

DRAFT-REGULATOR FOR LOCOMOTIVE-ENGINES.

SPECIFICATION forming part of Letters Patent N 0. 470,733, dated'Mareh15, 1892. Application filed December 15, 1890. Serial No. 374,847. (Nomodel.)

To all whom it may concern:

Be it known that I, ERASTUS E. WINKLEY, a citizen of the United States,residing at Lynn, in the county of Essex and Commonwealth ofMassachusetts, have invented a new and usef ul Draft-Regulator forLocomotive-Engines, of which the following is a specification.

My invention relates to improvements in draft-regulators for abovepurposes, in which, by means of a port and gate controlled from the cab,air may be admitted into the smokechamber of the locomotive to regulatethe effect upon the draft of the discharge of the exhaust-steam throughthe smoke-stack.

The object of my invention is to provide a' simple device that may beattached to forms of locomotives in common use, by means of which thedraft can be controlled from the cab and the waste'of fuel and cloggingof flues of boiler caused by too heavy draft, as when the heavy exhaustpasses through the smoke-stack in starting from stations, maybeprevented.

My invention is illustrated by the accompanying drawings, in which-Figure 1 is a side elevation of a boiler and adjacent parts oflocomotive-engine, showing my invention applied to same, with sectionbroken out to show interior of smoke-chamber and arrangement of myinvention therein. Fig. 2isalongitudinal vertical section through centerof smoke-chamber, including ends of boiler-fines, and furtherillustrating arrangement of my invention in said chamber. Fig.

3 is a section through a a, Fig. 1. Fig. 4 is a detached view of devicefor admission of air into smoke-chamber.

Similar letters referto similar parts throughout the several views.

In the drawings, A represents the chamber in front of fines of theboiler, through which the draft passes to smoke-stack, commonly calledthe smoke-chamber, the form shown being that commonly used in Americanengines, and being selected merely as convenient illustration, itforming no part of my invention.

B represents smoke-stack of ordinary form, connected with smoke-chamberin usual way.

0 represents device in common use for discharging exhaust intosmoke-stack, commonly called blast-pipes.

Into the smoke-chamber A, I open port (I. Then by formingconneotionbetween same and external atmosphere the port 01 is adapted to be closedby the sliding gate e, working airtight in the box f and operated fromthe cab of the locomotive bya leverland connectingrod r. I find itconvenient for purposes hereinafter set forth to have port (2 open intoapipe p, leading through chamber A to a point immediately undersmoke-stack B.

The operation of myinvention is as follows: When the draft through fluesis greater than necessary, as when a heavy exhaust is dischargingthrough smoke-stack by means of the lever Z and the connecting-rod r,the gate 6 may be wholly or partially opened and a current of airallowed to enter the chamber A. Air so admitted will tend-to fill thepar- -tial vacuum caused in chamber A by the passage of steam throughsmoke-stack B. The eifort to fill such partial vacuum by air passingthrough fines will be diminished, or, in other words, draft will bechecked. If air is allowed to enter chamber A directly after passingthrough port cl, I find that its elfect upon the draft through fines isirregular, depending to some extent on the direction which the currentof air takes upon entering said chamber. To remedy this, I find itconvenient to connect the pipe 10 with the port d, so that air enteringsaid port will be carried by said pipe to a point directly under thesmoke-stack B and there discharged in the direction of draft throughsaid smoke-stack. I

I claim as my invention and desire to secure by Letters Patent- 1. Adraft-regulator for locomotive-engines, consisting of a device for theadmission of air to the chamber in front of flues of the boiler,

through which the draft passes to the smokestack, and a device forcontrolling said admission from the cab of the locomotive, incombination with a device for discharging the exhaust-steam through thesmoke-stack, all substantially as set forth, and for the purposesspecified.

2. A draft-regulatorforlocomotive-engines, consisting of a portconnecting the chamber in front of fines of the boiler, through whichdraft passes to smoke-stack with the external atmosphere, a device foropening and closing said port from the cab of the locomotive, and

external atmosphere, the sliding gate 6, working air-tight in box f andadapted to close the port (Z, the connecting-rod 'r and lever 1, adaptedto operate gate e from cab of locomotive, and the pipe p, adapted toconduct current of air entering portal toa point under theSillOkG'SilZ'LCk and discharge it in direction of draft through same,all substantially as set 20 forth, and for purposes specified.

ERASTUS E. VVINKLEY.

\Vitnesses:

WINFIELD S. PARTRIDGE, BENJAMIN PHILLIPS.

